moderl.py

# -*- coding: utf-8 -*-

from google.appengine.ext import db
import re

class FindableModel(db.Model):
  def __getattr__(self, name):
    if not name.startswith("find_by_"):
      raise AttributeError(name)
    field = name[len("find_by_"):]
    return lambda value: self.all().filter(field, value)



#class Finders(type):

  #def __getattr__(self, name):
  #  if name.startswith("find_by_"):
  #    field = name[len("find_by_"):]
  #    return lambda value: self.all().filter(field, value).get()
  #  else:
  #    raise AttributeError(name)


class Model(db.Model):

  @classmethod
  def one(self, **filters):
    return self.find(**filters).get()

  @classmethod
  def find(self, **filters):
    q = self.all()
    for k, v in filters.iteritems():
      #print (u"filtering %s = %s" % (k, v))
      q.filter(k+' =', v)
    return q